? Weighted Co-Training for Cross-Domain Image Sentiment Classification
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Journal of Computer Science and Technology 2017, Vol. 32 Issue (4) :714-725    DOI: 10.1007/s11390-017-1753-8
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Weighted Co-Training for Cross-Domain Image Sentiment Classification
Meng Chen1,2, Lin-Lin Zhang1, Xiaohui Yu1,2, Member, CCF, IEEE,Yang Liu1,*, Member, CCF, IEEE
1 School of Computer Science and Technology, Shandong University, Jinan 250101, China;
2 School of Information Technology, York University, Toronto, M3J 1P3, Canada

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Abstract Image sentiment classification, which aims to predict the polarities of sentiments conveyed by the images, has gained a lot of attention. Most existing methods address this problem by training a general classifier with certain visual features, ignoring the discrepancies across domains. In this paper, we propose a novel weighted co-training method for cross-domain image sentiment classification, which iteratively enlarges the labeled set by introducing new high-confidence classified samples to reduce the gap between the two domains. We train two sentiment classifiers with both the images and the corresponding textual comments separately, and set the similarity between the source domain and the target domain as the weight of a classifier. We perform extensive experiments on a real Flickr dataset to evaluate the proposed method, and the empirical study reveals that the weighted co-training method significantly outperforms some baseline solutions.
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Keywordssentiment classification   cross-domain   weighted co-training     
Received 2016-12-20;
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This work was supported in part by the National Basic Research 973 Program of China under Grant No. 2015CB352502, the National Natural Science Foundation of China under Grant Nos. 61272092 and 61572289, the Natural Science Foundation of Shandong Province of China under Grant No. ZR2015FM002, the Science and Technology Development Program of Shandong Province of China under Grant No. 2014GGE27178, and the NSERC (Natural Sciences and Engineering Research Council of Canada) Discovery Grants.

Corresponding Authors: Yang Liu     Email: yliu@sdu.edu.cn
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Meng Chen, Lin-Lin Zhang, Xiaohui Yu, Yang Liu.Weighted Co-Training for Cross-Domain Image Sentiment Classification[J]  Journal of Computer Science and Technology, 2017,V32(4): 714-725
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http://jcst.ict.ac.cn:8080/jcst/EN/10.1007/s11390-017-1753-8
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